body {
    max-width: 750px;
    min-width: 320px;
    width: 10rem;
    margin: 0 auto;
    line-height: 1.5;
    font-family: Arial, Helvetica, STHeiTi, sans-serif;
    background: #f2f2f2;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
    height: 999.999975px;
}
a{
    text-decoration: none;
}
@media screen and (min-width:750px) {
    html {
        font-size: 75px!important;
    }
}

.search-content {
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 10rem;
    height: 1.173333rem;
    background: url(../images/bg.png) no-repeat;
    .classify,.login{
        width: .48rem;
        height: 1.04rem;
        padding: .146667rem .333333rem 0 .32rem;
        img{
            width: 100%;
        }
    }
    .search{
        flex: 1;
        position: relative;
        height: .853333rem;
        form{
            height: .853333rem;
            input{
                border: 0;
                outline: none;
                width: 100%;
                height: .853333rem;
                border-radius: .426667rem;
                padding-left: .933333rem;
                padding-right: .306667rem;
                font-size: .346667rem;
                &::placeholder{
                    color: #757575;
                }
            }
        }
        .search-icon{
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            left: .266667rem;
            width: .48rem;
            height: .48rem;
            background: url(../images/search.png);
            background-size: .48rem;
        }
    }
    .login{
        background: url(../images/login.png) no-repeat center;
        background-size: .48rem .8rem;
    }
}
.banner{
    a{
        img{
            width: 100%;
            vertical-align: middle;
        }
    }
}
.ad{
    display: flex;
    a{
        flex: 1;
        img{
            width: 100%;
            vertical-align: middle;
        }
    }
}
.nav{
    display: flex;
    flex-wrap: wrap;
    .nav-items{
        flex: 20%;
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-top: .133333rem;
        img{
            width: 1.12rem;
            height: 1.12rem;
        }
        span{
            margin-top: .093333rem;
            color: #666;
            font-size: .293333rem;
        }
    }
}
.nav2{
    
    a{
        float: left;
        width: 2rem;
        height: 1.866667rem;
        text-align: center;
        img{
            display: block;
            margin: .066667rem auto 0;
            width: 1.12rem;
            height: 1.12rem;
        }
        span{
            display: block;
            margin-top: .093333rem;
            color: #666;
            font-size: .293333rem;
        }
    }
}